CCS C Software and Maintenance Offers
FAQFAQ   FAQForum Help   FAQOfficial CCS Support   SearchSearch  RegisterRegister 

ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

CCS does not monitor this forum on a regular basis.

Please do not post bug reports on this forum. Send them to CCS Technical Support

Search found 42 matches
CCS Forum Index
Author Message
  Topic: usb to rs485 full duplex communication
emaxxenon

Replies: 32
Views: 64690

PostForum: General CCS C Discussion   Posted: Fri Mar 20, 2020 4:05 am   Subject: usb to rs485 full duplex communication
https://i.ibb.co/0qPDdp0/1.png

I saw such a scheme.

A --> 1K --> +
B --> 1K --> GND
  Topic: usb to rs485 full duplex communication
emaxxenon

Replies: 32
Views: 64690

PostForum: General CCS C Discussion   Posted: Fri Mar 20, 2020 3:03 am   Subject: usb to rs485 full duplex communication
edit:

ok sorry i got it wrong
  Topic: usb to rs485 full duplex communication
emaxxenon

Replies: 32
Views: 64690

PostForum: General CCS C Discussion   Posted: Fri Mar 20, 2020 2:37 am   Subject: usb to rs485 full duplex communication
I had the same problem before. I couldn't see what happened at the address you gave.

My problem was the integrated one I used. Cannot select RX-TX. There are cards that do this job automatically. T ...
  Topic: usb to rs485 full duplex communication
emaxxenon

Replies: 32
Views: 64690

PostForum: General CCS C Discussion   Posted: Fri Mar 20, 2020 12:22 am   Subject: usb to rs485 full duplex communication
I cannot access the link.
Can you renew?
  Topic: i2C Communication Control
emaxxenon

Replies: 2
Views: 10041

PostForum: General CCS C Discussion   Posted: Mon Mar 16, 2020 1:50 am   Subject: i2C Communication Control
Hello, thanks for answer.

I checked I2C debug.
If the address is incorrect, NAK = 1 appears. If true, 0 appears.
Is there a way to read this lice?
If the address is wrong, I want to turn on the ...
  Topic: i2C 2 Slave and IR Led Problem
emaxxenon

Replies: 10
Views: 21670

PostForum: General CCS C Discussion   Posted: Thu Mar 12, 2020 8:59 am   Subject: i2C 2 Slave and IR Led Problem
Here you define various slave addresses in the Master code:
#define R_SLAVE1_W 0x10
#define R_SLAVE1_R 0x11

#define T_SLAVE1_W 0x20
#define T_SLAVE1_R 0x21

But in your slave code, you don ...
  Topic: i2C 2 Slave and IR Led Problem
emaxxenon

Replies: 10
Views: 21670

PostForum: General CCS C Discussion   Posted: Thu Mar 12, 2020 7:08 am   Subject: i2C 2 Slave and IR Led Problem
What resistors are you using on the LED's?.
Because you use 'input_state', if the LED pin does not go high enough top be
seen as a '1' the code will return the wrong value. So if the pins are
'ov ...
  Topic: i2C 2 Slave and IR Led Problem
emaxxenon

Replies: 10
Views: 21670

PostForum: General CCS C Discussion   Posted: Thu Mar 12, 2020 6:47 am   Subject: i2C 2 Slave and IR Led Problem
You need to get rid of all your SSP ISR code in the master.
Ensure INT_SSP is disabled.
Then where you have:

data = i2c_read(0);


Use the value read here to control the LED's.

Then wherev ...
  Topic: i2C 2 Slave and IR Led Problem
emaxxenon

Replies: 10
Views: 21670

PostForum: General CCS C Discussion   Posted: Thu Mar 12, 2020 4:14 am   Subject: i2C 2 Slave and IR Led Problem
You do not use I2C_ISR_STATE in a master.

The whole point is in a master _you_ initiate all transfers. There is no
interrupt use for something happening on the bus because things only
happen whe ...
  Topic: i2C 2 Slave and IR Led Problem
emaxxenon

Replies: 10
Views: 21670

PostForum: General CCS C Discussion   Posted: Thu Mar 12, 2020 3:24 am   Subject: i2C 2 Slave and IR Led Problem
You need to get rid of the ISR code in the master.

I2C_ISR_STATE, is for a _slave_. The '0' condition that starts it, is an
address match (so the slave address being received). Similarly the 0x80 ...
  Topic: i2C 2 Slave and IR Led Problem
emaxxenon

Replies: 10
Views: 21670

PostForum: General CCS C Discussion   Posted: Thu Mar 12, 2020 2:59 am   Subject: i2C 2 Slave and IR Led Problem
Hello,

I have 1 master and 2 slave cards.
I use pic18f25k22 on all cards.
There are 16 ir leds in slave cards.
Master sends information to slave cards to turn these leds on one by one.
It reads ...
  Topic: i2C Communication Control
emaxxenon

Replies: 2
Views: 10041

PostForum: General CCS C Discussion   Posted: Mon Mar 09, 2020 3:12 am   Subject: i2C Communication Control
Hi,
I am communicating with i2C. (pic: 18F25K22)
I have 10 slave cards (5 receiver - 5 transmitter).
The master card sends commands for them to operate ir leds.
But I want to see if the i2C commun ...
  Topic: Timer 2 on PIC16F15325
emaxxenon

Replies: 9
Views: 18777

PostForum: General CCS C Discussion   Posted: Fri Feb 28, 2020 5:47 am   Subject: Timer 2 on PIC16F15325
Where did you make your oscillator settings?
  Topic: i2c Speed Setting
emaxxenon

Replies: 22
Views: 41001

PostForum: General CCS C Discussion   Posted: Thu Feb 27, 2020 11:45 pm   Subject: i2c Speed Setting
'speed', bus speed is always defined or controlled by the 'master'. However one needs to know the slave capabilities for 'speed'. Obviously you cannot set the bus speed higher than the furtherest, slo ...
  Topic: i2c Speed Setting
emaxxenon

Replies: 22
Views: 41001

PostForum: General CCS C Discussion   Posted: Thu Feb 27, 2020 6:55 am   Subject: i2c Speed Setting
Thanks for the answers.

I will try to work at low speeds.
Would the resistance values be appropriate as in the diagram I sent?

https://i.hizliresim.com/8XErNV.png

The length of the cable fro ...
 
Page 1 of 3 Goto page 1, 2, 3  Next
All times are GMT - 6 Hours
Jump to:  


Powered by phpBB © 2001, 2005 phpBB Group